Surname Sadjak (สัจจะ 
, Sadjak 
) , all around the world, is a rare cognomen. The family name Sadjak is characteristic of Liechtenstein, where it is quite a rare surname, Austria, and Sweden, where it is a rare surname. Not in comparison with a country's population, the name is most common in Austria, Indonesia, and Thailand. Also, Sadjak is the forename as well as the last name.
| franz sadjak Austrian association football player, AT (b. 1964) |
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| marian sadjak Austrian association football player, AT (b. 1972) |
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